/*
 * Copyright 2012-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.assertj.core.internal;

import static java.util.Objects.requireNonNull;

import java.util.function.Predicate;

public class Predicates {

  private static final Predicates INSTANCE = new Predicates();

  /**
   * Returns the singleton instance of this class.
   * @return the singleton instance of this class.
   */
  public static Predicates instance() {
    return INSTANCE;
  }

  private Predicates() {}

  /**
   * Asserts the given <code>{@link Predicate}</code> is not null.
   * @param predicate the given {@code Predicate}.
   * @throws NullPointerException if the given {@code Predicate} is {@code null}.
   */
  public void assertIsNotNull(Predicate<?> predicate) {
    requireNonNull(predicate, "The predicate to evaluate should not be null");
  }
}
